Crystal structure of N,N'-bis-(pyridin-3-ylmeth-yl)cyclo-hexane-1,4-di-ammonium dichloride.

ABSTRACT: The title salt, C18H26N42+·2Cl-, was obtained by the protonation of N,N-bis-(pyridin-4-ylmeth-yl)cyclo-hexane-1,4-di-amine with hydro-chloric acid in ethanol. The asymmetric unit consists of one half of an N,N-bis-(pyridin-3-ylmeth-yl)cyclo-hexane-1,4-di-ammonium dication, with a crystallographic inversion centre located at the centre of the cyclo-hexyl ring, and a chloride anion. The central cyclo-hexyl ring in the dication adopts a chair conformation. The two trans-(4-pyridine)-CH2-NH2- moieties at the 1- and 4-positions of the central cyclo-hexyl ring occupy equatorial sites. The terminal pyridine ring is tilted by 53.72?(6)° with respect to the mean plane of the central cyclo-hexyl ring (r.m.s. deviation = 0.2413?Å). In the crystal, N+-H?Cl- hydrogen bonds between the dications and the chloride anions, and ?-? stacking inter-actions between the pyridine rings of the dications afford a two-dimensional sheet extending parallel to the ab plane. These sheets are further connected through weak C-H?Cl- hydrogen bonds, resulting in the formation of a three-dimensional supra-molecular network.

SUBMITTER: Moon SH 

PROVIDER: S-EPMC5137595 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature